Electronic structure

Question 1

Where is the location of the sub-atomic particles?

Answer 1

• Proton + Neutron –> nucleus

- Electron –> orbiting in shells

Question 2

Where is the relative charge of the sub-atomic particles?

Answer 2

• Proton: +1
• Neutron: 0
• Electron: -1

Question 3

Where is the relative mass of the sub-atomic particles?

Answer 3

• Proton: 1
• Neutron: 1
• Electron: Too small

Question 4

Why do atoms have no overall charge?

Answer 4

• Neutron is neutral

- Proton + Electron cancel each other

Question 5

What is atomic number?

Answer 5

• Proton number

Question 6

How do you work out mass number?

Answer 6

• Proton + Neutron

Question 7

How many electrons are in each shell?

Answer 7

• 1st: 2 electrons
• All: 8 electrons
• Last: The ionic charge number (not full)